BELLBROOK, Ohio (AP) — A mix-up in an oxygen-delivery system is suspected of causing the deaths of two nursing home residents and the hospitalization of eight others.

An in-house oxygen system at the Carriage-by-the-Lake nursing home in this Dayton suburb might have accidentally been hooked to a nitrogen tank Thursday, a fire official said.

The nitrogen tank was labeled as containing nitrogen but looks much like an oxygen tank, said Bob Miles, an assistant fire chief from nearby Washington Township.

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